Boiler-tube cutter.



PATENTED JUN?J 6; 1905.

' AQ. A. HENDRIUKSON.

4BOILER TUBE GUTTER.

APPLIUATION FILED APE 3,1903.

2 SHEETS-SHEET 1.

' UNITED STATES Patented June 6, 1905.

ARTHUR HENDRIOKSON, OF BIG MOSES, WEST VIRGINIA.

. BOILEFl-'TUBEA CUTTER.

SPECIFICATION forming part of LettersPatent No. 791,784, dated June 6, 1905. Application filed April 3, A1903. Serial No. 150,901.

l To LZ/Z whom it may concern.'

Be it known that I, ARTHUR A. HENDRIOK- SON, a citizen of the United States, residing 'at Big Moses, in the county of Tyler, State be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to boiler-tube cutters; and it has for its object to provide a tool vide a simple and efficient construction by means of which the cutting-wheels may be readily adjusted as the cut is made and in such manner that the cutting o eration may be easily and quickly performed.

In the drawin s forming a portion of this specication, an in which like numerals of reference indicate similar parts in the several views, Figure 1 is a side elevation of the cutting-off tool, the position of a tube which is being cut off within a boiler being indicated in dotted lines. Fig. 2 is a longitudinal section taken centrally through the tool, the parts being in position to cut off the protruding end of a boiler-tube. Fig. 3 is a perspective view of the core of the cutter.v Fig. 4 is a transverse section of the tool throu h the core of the cutter and showing the en of the body of the cutter in elevation. Fig. 5 is a transverse section through the cutter in the plane of the cutting-wheels. Fig. 6 is a detail perspective view of one f the cutterwheels and its carrier. tion of the gage-sleeve.

Referring now to the drawings, the resent tube-cutter comprises 'a cylindrica body portion 10, through which is formed a longitudinal passage including the three arms or channels ill, 12, and 13, which are equidistant at their outer sides and radiate lfrom the center of the passage, the outer sides of this o passage being broadened transversely, as

Fig. 7 is a side eleval illustrated. This passagev is formed to receive a feed-core 14 for the cutters hereinafter described. The feed-core includes a cylindrical body portion at one end, while the other end is grooved longitudinally at three equidistant points to form the wings or webs 15, 16, and 17, which radiate from the central hub 18. The outer end portion of each of the wings is rectangular in cross-section, and at the free ends of the wings and at their outer sides are the laterally-directed fianges 19, which project to a maximum at the free end of the core and gradually decrease toward their opposite ends.

The body portion of the cutter has three recesses therein, which open into the longitudinal passage in the body portion, and in each of these recesses is fitted a carrier 21 having a dovetail extension 22 which iits in the concave portion 23 between the corresponding wings or webs of the core, said carrier fitting also snugly a ainst the side faces of the heads or laterallyroadened portions of said wings or webs. The central portion of the core incl eases gradually in thickness in the direction of the cylindrical body Vwportionthereof, so that as said core' is forced throu h the body 10 the carriers are moved radially outwardly through the sockets in which they are seated. Each of the carriers 21 has a transverse slot therein in which is rotatably mounted a cutter-wheel 24, which projects to a greater or lesser extent beyond the surface of the body 10 as the core is reciprocated.

To hold the carriers in their respective recesses, the end section is provided for the body 10 and is fitted against the end of the body proper and held thereto by means- IOO ting-wheels, outwardly or radially against the inner face of the tube to compensate for the depth that the wheels cut.

To prevent body 10 from moving into the tube as the core is pressed through the body, so that proper feeding of the cutters may be insured, a stop is provided and consists of a collar 27, which is rotatably mounted upon the body l and has a screw 28 engaged therethrough and which is adapted to engage either of the grooves 29 and 30, which circumscribe the body 10. From the collar 27 eX- tend the longitudinal spaced arms 31 and 32, which are sufficientlysep arated from the body l0 to permit of the tube that is to be cut to Yenter between said arms and the body l0, so

that the ends of the arms may rest against Y the boiler-head.

When a tube is to be cut ofl` inside of the boiler, the collar 27 is shifted rearwardly of the body l0, so that the screw 28 engages in the groove 29, at which time the ends of the shifted on the body until the screw 28 may be engaged in the groove 30, at which time the cutting-wheel will be outside of the boiler.

To provide for rotating the core, and therewith the body 10 and its cutters, a lever 33 is employed and which has an ordinary pawland-ratchet connection with the cylindrical l end portion of the core 14, so that by oscillation of the lever the core will be rotated.

It will be understood that while the body 10 rotates the collar 27 will remain stationary, and, furthermore, that when the core is stems of the carriers with the grooves of the core and the formation of the flanges 19.

In practice modifications of the specific construction shown may be made, and any suitable materials and proportions may be used for the various parts without departing from the spirit of the invention.

What is claimed is-- A boiler-tube cutter comprising a hollow cylindrical body portion having spaced notches in its forward end, carriers slidably disposed in the notches and having dovetailed projections extending into the body portion, a plate removably attached to the forward end of the body portion and having radial communicating slots therein, a forwardly-tapered core slidably disposed within the body portion and having dovetailed grooves therein corresponding 1n number to the notches and lying one beneath each of said notches, the projections of the carriers being slidably engaged in they grooves, the portion of the core between the grooves being slidably engaged in the radial slots, said core being movable longitudinally within the body portion to move the carriers in the notches, means for rotating the core and the body portion, eutters carried by the carriers and projecting bcyond the outer faces thereof, and a guidesleeve slidably mounted upon the body and having arms, said guide-sleeve being shiftable to bring the extremities of its arms at either side of the cutters, and means for holding the guide-sleeve at different points of its movement.

In testimony whereof I ailix my signature in presence of two witnesses.

ARTHUR A. HENDRICKSON.

Witnesses:

BLAINE Booman, H. U. MCELHATTEN. 

